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CVE-2007-4990

Status Candidate

Overview

The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.

Related Files

HP Security Bulletin 2007-14.68
Posted Jan 15, 2008
Authored by Hewlett Packard | Site hp.com

HP Security Bulletin - A potential security vulnerability has been identified with HP-UX running the X Font Server (xfs). The vulnerability could be exploited remotely to execute arbitrary code.

tags | advisory, arbitrary
systems | hpux
advisories | CVE-2007-4990
SHA-256 | 46430d14fb8675c96dbb71038ba0789b6cccfcf24d3400b554e11ae176e387c1
Mandriva Linux Security Advisory 2007.210
Posted Nov 7, 2007
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory - Integer overflow in the build_range function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values, which triggers a heap-based buffer overflow. The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.

tags | advisory, overflow, arbitrary, protocol
systems | linux, mandriva
advisories | CVE-2007-4568, CVE-2007-4990
SHA-256 | 3590d95e704a2b4bb5d685df07d508326a9d5921828ec1b7d94910404cf25c19
Gentoo Linux Security Advisory 200710-11
Posted Oct 13, 2007
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200710-11 - iDefense reported that the xfs init script does not correctly handle a race condition when setting permissions of a temporary file. Sean Larsson discovered an integer overflow vulnerability in the build_range() function possibly leading to a heap-based buffer overflow when handling QueryXBitmaps and QueryXExtents protocol requests. Sean Larsson also discovered an error in the swap_char2b() function possibly leading to a heap corruption when handling the same protocol requests. Versions less than 1.0.5 are affected.

tags | advisory, overflow, protocol
systems | linux, gentoo
advisories | CVE-2007-3103, CVE-2007-4568, CVE-2007-4990
SHA-256 | 511f463b3188bb6e41c1e0acef1a8578132acf147999f05fdb2f1f68b185056e
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